| 年份 | 人口总数 |
|---|---|
| 1960 | 290.77 |
| 1961 | 294.90 |
| 1962 | 299.23 |
| 1963 | 303.62 |
| 1964 | 308.87 |
| 1965 | 314.36 |
| 1966 | 318.53 |
| 1967 | 322.20 |
| 1968 | 326.17 |
| 1969 | 330.19 |
| 1970 | 334.24 |
| 1971 | 339.68 |
| 1972 | 346.47 |
| 1973 | 354.25 |
| 1974 | 362.96 |
| 1975 | 371.83 |
| 1976 | 380.86 |
| 1977 | 390.10 |
| 1978 | 399.59 |
| 1979 | 409.28 |
| 1980 | 419.20 |
| 1981 | 429.39 |
| 1982 | 439.83 |
| 1983 | 450.25 |
| 1984 | 460.30 |
| 1985 | 470.70 |
| 1986 | 481.97 |
| 1987 | 489.38 |
| 1988 | 481.49 |
| 1989 | 470.66 |
| 1990 | 475.08 |
| 1991 | 486.72 |
| 1992 | 495.70 |
| 1993 | 501.82 |
| 1994 | 514.29 |
| 1995 | 530.20 |
| 1996 | 543.49 |
| 1997 | 558.94 |
| 1998 | 569.94 |
| 1999 | 585.01 |
| 2000 | 611.44 |
| 2001 | 639.44 |
| 2002 | 668.61 |
| 2003 | 699.24 |
| 2004 | 731.71 |
| 2005 | 766.27 |
| 2006 | 802.95 |
| 2007 | 841.78 |
| 2008 | 882.39 |
| 2009 | 922.92 |
| 2010 | 971.44 |
| 2011 | 1024.31 |
| 2012 | 1070.16 |
| 2013 | 1110.60 |
| 2014 | 1121.33 |
| 2015 | 1119.43 |
| 2016 | 1106.61 |
| 2017 | 1065.82 |
| 2018 | 1039.53 |
| 2019 | 1044.77 |
| 2020 | 1060.62 |
| 2021 | 1074.83 |
2021年，南苏丹人口总数为1074.83万人，比上年增加约14万人。
